1.Special Flanges,carbon flange,steel flange,forged flange 2.Material:stainless steel 3.Standard:ANSI,ASTM,JIS (1) Flanges ... Welding Ring Loose Flange, Slip on Neck Flange, Welding Neck Flange, Long Welding Neck Flange, Blind Flange, Socket Welding Flange, Thread Flange, Screwed Flange, Lap Joint Flange(2) Flanges Standards ...